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oe1(光电查) - 科学论文

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  • [IEEE 2019 21st International Conference on Transparent Optical Networks (ICTON) - Angers, France (2019.7.9-2019.7.13)] 2019 21st International Conference on Transparent Optical Networks (ICTON) - Excitation of Breather Solitons in a Mode-Locked Fibre Laser

    摘要： We report on the generation and study of breathing dissipative solitons in a mode-locked fibre laser. Breathers exist in the laser cavity under the pump threshold of stationary mode locking. For the first time to our knowledge, breathing soliton molecules are also observed. Numerical simulations of the laser model support our experimental findings.

    关键词： breather solitons,dissipative nonlinear systems,mode-locked fibre lasers

    更新于2025-09-23 15:21:01

  • Towards visible-wavelength passively mode-locked lasers in all-fibre format

    摘要： Mode-locked fibre lasers (MLFLs) are fundamental building blocks of many photonic systems used in industrial, scientific and biomedical applications. To date, 1–2 μm MLFLs have been well developed; however, passively mode-locked fibre lasers in the visible region (380–760 nm) have never been reported. Here, we address this challenge by demonstrating an all-fibre visible-wavelength passively mode-locked picosecond laser at 635 nm. The 635 nm mode-locked laser with an all-fibre figure-eight cavity uses a Pr/Yb codoped ZBLAN fibre as the visible gain medium and a nonlinear amplifying loop mirror as the mode-locking element. First, we theoretically predict and analyse the formation and evolution of 635 nm mode-locked pulses in the dissipative soliton resonance (DSR) regime by solving the Ginzburg-Landau equation. Then, we experimentally demonstrate the stable generation of 635 nm DSR mode-locked pulses with a pulse duration as short as ~96 ps, a radio-frequency signal-to-noise ratio of 67 dB and a narrow spectral bandwidth of <0.1 nm. The experimental results are in excellent agreement with our numerical simulations. In addition, we also observe 635 nm noise-like pulse operation with a wide (>1 nm) and modulated optical spectrum. This work represents an important step towards miniaturized ultrafast fibre lasers in the visible spectral region.

    关键词： visible-wavelength,mode-locked fibre lasers,all-fibre format,dissipative soliton resonance,passively mode-locked

    更新于2025-09-23 15:19:57